RTX 5090 and slow daz
trojanx97
Posts: 57
i am using 5090 rtx and i recently installed daz in this new computer but its soo slow and crashes every few minutes
i used to use daz on my old computer with 4080rtx and it worked fine but with better gpu it just refused to work normally
moving characters limbs is soo slow and lags and also crashes
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Did you install Daz 6 and not 4.24? 4.24 won't use your 5090 and only uses your GPU.
i have daz 6 installed and i can render too
but after few mins my daz gets very slow and laggy and crashes randomly
I think you'd need to provide more information - is there anything in the log? What is the crash information (Hitting the 'More' button)? What are the steps you're performing - how big is the scene, etc. Limbs can move really slowly for a lot of reasons - including a lot of smoothing on the characters clothing, etc. There's also a few bad hair products on the store that make characters almost unusable if they have it. Does it happen if you just load a basic character into an empty scene and just fiddle with it for a while - does it crash then? Does it get slow/laggy/crash in Iray Preview or is it other things (texture shaded, etc.) as well? Viewport is definitely slower in Daz 6 than in 4.24, and Daz 6 crashes more than 4.24. I have a 5090 as well and in large/complex scenes, or with a lot of characters, I do most of the work in 4.24 and only use Daz 6 to hit the render button because of that (both can be installed together)
One thing to check too is to make sure it is set up and recognizes your 5090 in render setings, and that the checkbox is checked to use it.
yes daz3d is detecting my 5090gpu
yes i have studio drivers
i have tried changing assets and models but lag still comes back after few mins
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so after few mins of runing daz it starts getting slow and laggy and randomly crashes
viewport starts moving very slow and almost lags 5-10 seconds behind if i am on iray and 1-2 seconds on textured and than it will crash
when i start again it will again work fine for few mins and repeats the lag and crash
64gb ram
32gb vram
This is a known issue with 50xx cards, reported by many users, and also in the general release log, so DAZ is well aware. What you can try is to use the recommended drivers 576.80 studio, that's the same the DAZ developers are using, but it seems it doesn't help much. In my opinion DAZ rushed out DS6 too early, a similar major bug in the viewport should not have seen the general release. You can just hope they will fix it soon.
https://www.daz3d.com/forums/discussion/763291/daz-studio-6-25-0-x-general-release
edit. p.s. 64gb ram is a little low for 32gb vram, ideally you need ram = 3x vram. Also considering ram is used by the OS and other apps as well. Also ram can be used as out of core aka shared gpu memory by some rendering engines as cycles and octane. You better upgrade to 128gb ram if you can.
If DAZ/Iray is spilling from 32 GB VRAM into system RAM, that is already a performance failure mode, not proof that “64 GB is too low.”
The issue is having enough space to hold the scene data as used by DS and to process it to create the data to be sent to Iray - DS usually uses loweer levels of SubD and images, Iray needs only the final shape rather than modifiers, and so on. The rule of thumb is that prepping a scene generally requires 2-3 times as much memory as the actual render process, so to take full advantage of a 32GB card (in terms of scene size) you might well need mor than 64GB system memory. Of course smaller scenes would require less memory.
You can increase the swap file size under virtual memory for windows, where RAM is virtually expanded at your SSD. I have 64gb ram and increased it to 120gb virtual memory. My scenes easily hit 100gb in size for rendering. Your SSD will be under more strain and more RAM is much faster.
The swapfile is dynamic, not static, windows will grow it as needed you don't need to set a specific size or a maximum size. Unless the drive is very old or slow where a fixed size may speed up operations a little.
Listing your full specs may help. Not all components are fully compatible. For example, you can have the fastest DDR5 RAM with the lowest latency but it could be bottlenecked by the CPU and/or the BIOS.
Dynamic swapfile is not a live, elastic allocation that grows instantly with demand. It's a reactive mechanism with real latency and Iray won't get instantly the required size. It is a borderline case. Setting up a fixed size helps here.
@trojanx97, could you please provide us with the GPU/RAM memory ratio on your old computer? This would be very helpful for those considering upgrading to a system with a more powerful graphics card.
@vectorinus my old computer that 64gb ram and 16gbvram 4070ti and it worked perfectly with daz but it was slower for ai rendering
so i bought this new computer and waited 2 months until i shifted my daz library on this one and i already knew a little bit that daz dont work well with 5090 rtx but with daz6 release i thought the issue is resolved but its not ... i mean daz6 works with 5090 but performance is very poor and its not because of ram even with solo character scene after few mins viewport lags like hell and scene crashes without saving it
so bottom line you can use 5090 with daz but peformance is extremely extremely poor
Thank you so much, @trojanx97! This is very interesting. By the way, your configuration might be suitable for those who create scenes in DAZ Studio and render them using AI (like me). However, it seems Richard is right. System memory on an older computer is more than three times larger than video memory. Does this difference really impact performance that much? Very useful, specific information.
No, not to my knowledge, unless your scene is very heavy.
I'm using a 5090 GPU with 64GB 3600mhz RAM, apart from the software issues and iRay preview stuttering (20x times slower than Daz 4.24), I have no issues with my scenes, and they number in the 10-15 million vertex count, 4-7 G8.1 characters, etc., no Scene Optimizer used.